how much is this car                           cost

....................................................

there is a big library in lan's school                has

..................................................................

why don't we go swimming                   about

.................................................

`1.` How much does this car cost?

`-` How much + tobe + S?

`=` How much + aux + S + cost?
`->` hỏi giá cả

`2.` Lan's school has a big librabry

`-` There + tobe + number + N + pre + N

`=` N + has/have + number + N
`3.` How about going swimming?

`-` Why don't we + V_inf + O?
`=` How/What about + V_ing + O?
`->` gợi ý, đề nghị làm gì.

How much is this car ?

- How much does this car cost?

· How much + do/does + smth + cost? 

There is a big library in lan's school.

- Lan's school has a big library.

· S + has/have + number + N

Why don't we go swimming?

- What about going swimming?

· How/What about + V_ing + O?

$Minhklacuato<3$